US3950186A - Envelope for the tubular electrodes of storage batteries - Google Patents

Envelope for the tubular electrodes of storage batteries Download PDF

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Publication number
US3950186A
US3950186A US05/486,419 US48641974A US3950186A US 3950186 A US3950186 A US 3950186A US 48641974 A US48641974 A US 48641974A US 3950186 A US3950186 A US 3950186A
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US
United States
Prior art keywords
fabric
tied
warp threads
arrangement
envelope according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/486,419
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English (en)
Inventor
Heinz Breidenbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
VARTA Batterie AG
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VARTA Batterie AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VARTA Batterie AG filed Critical VARTA Batterie AG
Application granted granted Critical
Publication of US3950186A publication Critical patent/US3950186A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/76—Containers for holding the active material, e.g. tubes, capsules
    • H01M4/765—Tubular type or pencil type electrodes; tubular or multitubular sheaths or covers of insulating material for said tubular-type electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to an envelope for tubular electrodes such as may be used in lead acid storage batteries.
  • Envelopes for such tubular electrodes made in general of woven plastic fabric or glass fibers, are known in a wide variety of specific forms.
  • German Patent publication (Auslegeschrift) No. 1,162,895 it is proposed to utilize for this purpose mixed materials of plastic and glass fibers.
  • tubular electrode envelopes are generally produced from double layer fabric. This consists of a woven fabric forming flat pockets which intersect at regular intervals. This fabric is slack after weaving, and is stiffened through introduction of cylindrical cores, as well as through heating and the shrinking of the plastic fibers which may ensue.
  • such a fabric may be heated until the plastic fibers soften, whereupon the softened fibers adhere to each other and their porosity simultaneously decreases.
  • the slack fabric is impregnated with a synthetic resin dispersion and then stiffened by insertion of cylindrical cores and drying.
  • individual tubes especially of glass fibers, may be utilized, which are then assembled into a tubular electrode plate.
  • a spacer must be provided within the battery in order to obtain better electrolyte diffusion and better gas elimination during charging.
  • a spacer consists of a perforated polyvinyl chloride separator serving as spacer adjacent the positive electrode and of a separator adjacent the negative electrode which may be a sintered body, or, if desired of rubber, of woven material or of matting.
  • Such an electrode pocket may take place as follows. First, a hose-like fabric is woven in which, depending upon the desired size of the spacers, several warp threads are so tied-off by weft threads that a hose-like fabric with two ears is produced.
  • the shaping can then be performed in the usual manner by insertion of cores followed by impregnation and drying, or by impregnation before insertion of the cores. It is also possible to impregnate the threads prior to weaving and then to accomplish shaping by heat setting.
  • the ears, or spacers so formed are preferably simultaneously impregnated with a material resistant to the electrolyte, such as polymethacrylate, polystyrene or similar synthetic resins.
  • a specific embodiment of the invention involves making those warp threads which are to be tied off, and which are to serve as spacers, of a different material than that used for the remainder of the hose-like fabric.
  • thermo-plastic fibers may be used for this purpose, such as polyethylene and polypropylene.
  • the ears can then be stabilized by heat treatment followed by cooling.
  • the hose-like fabric which is then preferably made of glass fibers, with an internal supporting fabric of a thermoplastic material.
  • the shaping can be accomplished by heat setting.
  • the supporting web and the warp threads to be tied off may be made of the same material, such as polyethylene or polypropylene.
  • FIG. 1 is a diagrammatic view of a tubular electrode plate with individual tubes provided with spacers embodying the invention.
  • FIG. 2 is a diagrammatic view of the construction of the woven fabric utilized in the embodiment of FIG. 1.
  • the electrode plate comprises a negative electrode 1 and separators 2 between which there are positioned the individual tubes 3 with spacers 4 which form the positive electrode.
  • this shows a woven fabric of hose-like form, including warp threads 5 and weft threads 6. These threads preferably consist of glass fibers because these exhibit the best durability under the conditions prevailing in storage batteries.
  • the warp threads which are to be tied off to form the spacer are designated by reference numeral 7.
  • the hose-like fabric may be made in any of a variety of weaves, including linen, twill and satin weaves. For glass fibers, it is preferred to use twill or satin weaves.
  • the spacer may protrude beyond the diameter of the tubes by between 1 and 2mm approximately.
  • the tube envelope according to the invention makes it possible to eliminate the conventional spacer. This saves much expense and also considerably lowers the resistance (150 to 250m ⁇ ⁇ cm 2 ). In addition the acid volume within the cell is increased leading to better mass utilization.
  • the resistance of conventional electrode pockets, polyvinyl chloride corrugated spacer, and separator amounts for prime mover batteries to 500 to 600 m ⁇ ⁇ cm 2 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Cell Separators (AREA)
US05/486,419 1973-07-23 1974-07-08 Envelope for the tubular electrodes of storage batteries Expired - Lifetime US3950186A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19732337320 DE2337320A1 (de) 1973-07-23 1973-07-23 Umhuellung fuer roehrchenelektroden von bleiakkumulatoren
DT2337320 1973-07-23

Publications (1)

Publication Number Publication Date
US3950186A true US3950186A (en) 1976-04-13

Family

ID=5887711

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/486,419 Expired - Lifetime US3950186A (en) 1973-07-23 1974-07-08 Envelope for the tubular electrodes of storage batteries

Country Status (3)

Country Link
US (1) US3950186A (fr)
CA (1) CA1024588A (fr)
DE (1) DE2337320A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102044712B (zh) * 2009-10-10 2013-10-09 荷贝克电池有限商业两合公司 蓄电池

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540293B1 (fr) * 1983-01-31 1986-03-21 Europ Accumulateurs Enveloppe tubulaire pour electrode d'accumulateur

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1243371A (en) * 1915-11-08 1917-10-16 Theodore A Willard Porous tube for storage batteries.
US2195211A (en) * 1937-09-22 1940-03-26 Electric Storage Battery Co Secondary or storage battery
US2350752A (en) * 1941-12-01 1944-06-06 Electric Storage Battery Co Plate for secondary or storage batteries
US3081368A (en) * 1958-11-17 1963-03-12 Sonnenschein Accumulatoren Positive plate of a storage battery and a porous tubular sheathing for a rod of suchplate
US3224905A (en) * 1961-05-30 1965-12-21 Varta Ag Tubes for holding the active material in electrode plates of galvanic elements
US3266935A (en) * 1961-10-06 1966-08-16 Boriolo Lino Alessandro Methods for producing plate sheaths for storage batteries

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1243371A (en) * 1915-11-08 1917-10-16 Theodore A Willard Porous tube for storage batteries.
US2195211A (en) * 1937-09-22 1940-03-26 Electric Storage Battery Co Secondary or storage battery
US2350752A (en) * 1941-12-01 1944-06-06 Electric Storage Battery Co Plate for secondary or storage batteries
US3081368A (en) * 1958-11-17 1963-03-12 Sonnenschein Accumulatoren Positive plate of a storage battery and a porous tubular sheathing for a rod of suchplate
US3224905A (en) * 1961-05-30 1965-12-21 Varta Ag Tubes for holding the active material in electrode plates of galvanic elements
US3266935A (en) * 1961-10-06 1966-08-16 Boriolo Lino Alessandro Methods for producing plate sheaths for storage batteries

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102044712B (zh) * 2009-10-10 2013-10-09 荷贝克电池有限商业两合公司 蓄电池

Also Published As

Publication number Publication date
DE2337320A1 (de) 1975-04-10
CA1024588A (fr) 1978-01-17

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